APA-referens

Simmons, G. F. (1974). Differential equations. Tata Mc Graw-Hill.

Chicago-stil citat

Simmons, George F. Differential Equations. New Delhi: Tata Mc Graw-Hill, 1974.

MLA-referens

Simmons, George F. Differential Equations. Tata Mc Graw-Hill, 1974.